George Mitchell

AGE: 75
OCCUPATION: U.S. envoy to the Middle East
PREVIOUS APPEARANCES ON THE TIME 100: 1

PRO: More than a decade after leading a fact-finding mission focusing on the Arab-Israeli conflict, the respected diplomat has been drafted to help bring peace (or some semblance of peace) to the fractured region.

CON: Peace in the Middle East has always been a near impossible task, and growing anti-U.S. sentiment is only going to make it harder.